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[SDL] Color Cursor

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I read the SDL DocWiki and said that if I wanted a color cursor, just use an SDL surface and blit it to where the cursor is. Makes sense to me, but, doesn't that mean I have to update the screen with every little mouse motion detected? I can't think of any other way to do it. That seems like a horrible way to do it since every time the mouse moves the whole screen gets updated which takes up alot of CPU usage, I think.

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A 'frame' just means each time you update the screen. You are constantly updating the screen, many times a second. (It's rare for people not to update continually, when using modern PCs)

What you would do, is store the current location of the mouse in your event queue:

int MouseX, MouseY;

...

while(SDL_PollEvent(&event))
{
...
if(event.type == SDL_MOUSEMOTION)
{
//Get the location the mouse, and store it in MouseX, and MouseY.
MouseX = event.mouse.motion.x;
MouseY = event.mouse.motion.y;
}

...
}
And in the part of your code where you draw everything to the screen, right before you call SDL_Flip(), draw the mouse.


SDL_Surface *mousePointer;

...
SDL_Rect rect;
rect.x = MouseX;
rect.y = MouseY;

SDL_BlitSurface(mousePointer, NULL, screen, &rect);

SDL_Flip(screen);

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